MUTOH Rockhopper II series Maintenance Manual page 155

Step 5 :
Make adjustments until amount of CW and CCW offset are identical.
Notes :
How to adjust
No.
1 Angle adjustment screw
Step 6 :
Tighten the screw fixing the head stationary plate.
Repeat step 1 to 6 until the adjustment is correct for all heads.
In theory, the alignment of CW and CCW should be identical. But in practice, it is
almost impossible to become a perfect alignment. When there is a slight difference
between CW and CCW, be sure the heads are well seated.
In case you only print uni directional, adjust the CW till it is aligned perfectly.
In case you print bi-directional, and CW and CCW cannot be aligned more perfectly.
Divide the fault equally.
When printing the pattern, the head identifications 1A, 1B etc, are not printed.
Analyse the pattern as shown below. Be sure to have five lines for each color.
Part
Rockhopper II series printers – Maintenance Manual
156
What to become
AP-74065, Rev. 1.2, 27/09/04